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Thread: zcs 7.1.2 high CPU loading used by java process

  1. #11
    bofh is offline Elite Member
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    Naa still not out it just means it WILL be fixed in the 7.1.4

  2. #12
    mrcoffee11 is offline Senior Member
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    Brad46526, did you solve this issue? Got it too on Centos 6.2 Zimbra 7.2.0. Same processes going crazy five days after a fresh install. Really weird.
    EDIT
    Only a reboot seems to help.
    Last edited by mrcoffee11; 07-01-2012 at 02:31 PM.
    FC11 x64 / Centos 6.2 - Zimbra 7.2.0 Open Source version - ESX 5.0

  3. #13
    babblo is offline Starter Member
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    Same here... 30 users, nobody online at the moment of problem.

    Physical server.
    Linux 2.6.32-220.23.1.el6.x86_64 #1 SMP Mon Jun 18 18:58:52 BST 2012 x86_64 x86_64 x86_64 GNU/Linux
    Release 7.2.0_GA_2669.RHEL6_64_20120410002025 CentOS6_64 FOSS edition.
    Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
    8GB RAM

    The process are:

    32356 ? Sl 3:52 \_ /opt/zimbra/java/bin/java -XX:ErrorFile=/opt/zimbra/log -client -Xmx256m -Dzimbra.home=/opt/zimbra -Djava.library.path=/opt/zimbra/lib -Djava.ext.dirs=/opt/zimbra/java/jre/lib/
    ext:/opt/zimbra/lib/jars:/opt/zimbra/lib/ext-common:/opt/zimbra/lib/ext/clamscanner -Djava.io.tmpdir=/opt/zimbra/data/tmp -Dpython.cachedir=/opt/zimbra/data/tmp/jython-cachedir org.python.util.jython /opt/zi
    mbra/libexec/zmconfigd

    32293 ? Sl 11:38 \_ /opt/zimbra/java/bin/java -Dfile.encoding=UTF-8 -server -Djava.awt.headless=true -Dsun.net.inetaddr.ttl=60 -XX:+UseConcMarkSweepGC -XX:PermSize=128m -XX:MaxPermSize=128m -XX:So
    ftRefLRUPolicyMSPerMB=1 -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCApplicationStoppedTime -XX:-OmitStackTraceInFastThrow -Xss256k -Xms1945m -Xmx1945m -Xmn486m -Djava.io.tmpdir=/opt/zi
    mbra/mailboxd/work -Djava.library.path=/opt/zimbra/lib -Djava.endorsed.dirs=/opt/zimbra/mailboxd/common/endorsed -Dzimbra.config=/opt/zimbra/conf/localconfig.xml -Djetty.home=/opt/zimbra/mailboxd -DSTART=/op
    t/zimbra/mailboxd/etc/start.config -jar /opt/zimbra/mailboxd/start.jar /opt/zimbra/mailboxd/etc/jetty.properties /opt/zimbra/mailboxd/etc/jetty-setuid.xml /opt/zimbra/mailboxd/etc/jetty.xml


    Any idea?

  4. #14
    babblo is offline Starter Member
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    Hi, after a long search, found this:

    Jetty High CPU load since July 1st 00:00:00 UTC

    Seems to work, at least with my conf.

    Hope this help!

  5. #15
    Brad46526 is offline Junior Member
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    Quote Originally Posted by mrcoffee11 View Post
    Brad46526, did you solve this issue? Got it too on Centos 6.2 Zimbra 7.2.0. Same processes going crazy five days after a fresh install. Really weird.
    EDIT
    Only a reboot seems to help.
    Mr. Coffee, no, I never found a solution. Occasionally a java process would just take off and I'd go and kill it. :-( I've since moved jobs and no longer have to worry about Zimbra running my CPU hot any more though. :-)

    Babblo, my problem occurred months ago, so it wasn't due to the leap second bug.

  6. #16
    mstroven is offline Active Member
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    Default High CPU java processes (Zimbra 8 also)

    Quote Originally Posted by Brad46526 View Post
    Mr. Coffee, no, I never found a solution. Occasionally a java process would just take off and I'd go and kill it. :-( I've since moved jobs and no longer have to worry about Zimbra running my CPU hot any more though. :-)

    Babblo, my problem occurred months ago, so it wasn't due to the leap second bug.
    I'm getting the same situation approximate twice per week. My machine is an amazon EC2 instance of CentOS 6.2 x86_64 with an 800GB EBS volume mounted at /opt containing Zimbra 8.0.1 and all of it's dependents.

    My instance type is an "m1.medium", and I have also tried "m1.large" with identical results. I have 35 mailboxes. 99% of the time, "top" reports java at less than 20% CPU usage. However, when things start to go bad, I see multiple java processes using 90+ % cpu, and the web interface becomes completely unresponsive. Restarting with "zmcontrol restart" does not help. In fact, rebooting the VM instance does not help. The only thing I have found that consistently helps is a re-install of Zimbra. I have ZeXtras installed, but removing it did not cure my problem. Memory utilization does not seem affected. I never see > 40% memory usage (never over 20% on the bigger VM type) in "top". I am currently trying to get some meaningful data using "sar" to correlate the cpu usage spike with some underlying issue.
    I have only a suspicion that EBS write-buffer performance may be the issue, and in certain instances, log writes are not happening fast enough, so everything gets slow. Is this even a possibility? Any ideas would be greatly appreciated.

    -Mike

  7. #17
    oliver2uk is offline Senior Member
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    Mike,

    Upgrade your zimbra to 8.0.2. The java issue have been fix in that version, we experienced the same problem as you described, 8.0.2 fixes it.

    Hope it helps.

    Oliver

  8. #18
    mstroven is offline Active Member
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    Oliver,
    Thanks for the update. I did the 8.0.2. upgrade yesterday morning, and updated by ZeXtras extensions as well. So far 58 hours uptime no issues yet. Will keep a close eye, but for now, "so far, so good."

  9. #19
    oliver2uk is offline Senior Member
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    We have been running 8.0.2 since it came out, I think we spotted it just shortly after it was released by pure luck.

    You will not have any issues from now on :-)

  10. #20
    mstroven is offline Active Member
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    Sorry. NO GOOD. At 14:15 EST today, back to the same old pegged CPU at 97% usage. No one able to access web interface, Outlook and other clients unable to attach. Only recovery is by re-installing 8.0.2...

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